If you are learning how to play guitar, or you want to learn some specific song, then tabscout.com is one place to visit.
This website features guitar and bass tablatures of a great diversity of songs. In fact, they have on their database more than 100.000, of almost any genre you can imagine. Finding a song is really simple, since you can look for artist, band or song name and everything is ordered alphabetically. Also, on their homepage you can see all the latest added tabs and the most popular artists. According to this website they are the largest database for tabs on the internet. What they do is search on the internet for any guitar or base tab, collecting them and classifying it. This way they can gather in one place the whole offer of tablatures on the net. To be able to read them you will need a program called Guitar Pro. 
